6986879491 has 8 divisors (see below), whose sum is σ = 7244135280. Its totient is φ = 6730712352.

The previous prime is 6986879489. The next prime is 6986879507. The reversal of 6986879491 is 1949786896.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6986879491 - 2¹ = 6986879489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6986879411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259080 + ... + 284773.

It is an arithmetic number, because the mean of its divisors is an integer number (905516910).

Almost surely, 2^6986879491 is an apocalyptic number.

6986879491 is a deficient number, since it is larger than the sum of its proper divisors (257255789).

6986879491 is a wasteful number, since it uses less digits than its factorization.

6986879491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544325.

The product of its digits is 47029248, while the sum is 67.

The square root of 6986879491 is about 83587.5558381749. Note that the first 3 decimals coincide. The cubic root of 6986879491 is about 1911.7352623711.

The spelling of 6986879491 in words is "six billion, nine hundred eighty-six million, eight hundred seventy-nine thousand, four hundred ninety-one".